US2560831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit interrupter
Assignee: McGraw Electric Co
•
Filing: 1945-03-28
•
Granted: 1951-07-17
•
Expires: 1965-03-28
Abstract
No abstract record available.
Inventors
- 👤 Anthony Van Ryan
- 👤 Schindler Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:50
CPC Classifications
H; H01; H01H; H01H75/00; H01H75/02; H01H75/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US508652A
Cited
US1288017A
Cited
US1648508A
Cited
US1893348A
Cited
US2069082A
Cited
US2311714A
Cited
US2379729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |